I ordered the Tamron for Canon 6D and am thrilled. The sharpness is great, the comparison with the 24-105L at the same focal length and the same settings are incredible. The autofocus is seated, the feel, despite plastic, is great and feels anything but cheap to. The included tripod collar is a little "loose" around the lens and can be moved back and forth, which can ever produce a blur on tripod with carelessness, but that's the only gripe, otherwise to a strong buy recommendation minimal. The pictures are as mentioned knackscharf!